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1、Unit8GreenLiving一、阅读理解（本大题共15小题，共30.0分）AWeighingtoomuchcandamageyourhealth,andobesityisagrowingproblemforbothkidsandadultsaroundtheworld.Sleepmightbeoneanswertotheproblem.Anewstudyhasfoundthatelementaryschoolstudentswhoslepttoolittleweremorelikelytogainpounds.Paststudieshaveshownalinkbetweensleeping
2、lessandweighingmore,butscientistshavehadatoughtimedetermining,saysJulieC.LumengoftheuniversityofMichiganinAnnArbor.Inotherwords,ithasntbeenclearwhetherkidswhoweightoomuchhavetroublesleeping,orwhethersleepinglessleadstoweightgain.Bothscenariosseemedequallypossible.Togetabetterideaofwhichcauseswhich,L
3、umengandhercolleaguesinterviewedtheparentsof785thirdgradersfromaroundtheUnitedStates.Theparentsansweredquestionsabouthowwelltheirkidssleptthatyear.Threeyearslater,theparentsansweredthesamequestions.Bysixthgrade,18percentofkidsinvolvedinthestudywereobese.Thescientistsfoundnorelationshipbetweenweighta
4、ndthestudentsraceorgender.ltalsodidntmatterhowstricttheirparentswere,orwhethertheywereboysorgirls.Obesitystruckallofthesegroupsequally.Instead,sleepseemedtobethekeyfactor.Overthethreeyearsofstudy,thechildrenaveragedahealthy9.5hoursofsleepanight.Somekids,however,sleptalotmoreorlessthanothers.Forthesi
5、xthgraders,everyhourofsleepabovethe9.5houraveragewaslinkedtoa20percentlowerriskofbeingobese.Sleepappeareddoublyimportantforthethirdgraders.Everyextrahourofsleeptheygotwaslinkedtoa40percentdropinobesity.1. Whatdoestheunderlinedsentenceonparagraph2imply?A. Scientistshavefoundtheexactcausesofchildrenso
6、besity.B. ThereisalwayssomethingdifficulttounderstandthroughtheoryC. Thecause-effectrelationshipbetweenweightandsleepisntclear.D. Apersonsweighthassomethingtodowiththeamountofhissleep.A. 9.5hoursofsleepanightisenoughforchildren.B. Themoreachildsleeps,thehealthierhewillbe.C. Sixthgradersneedmuchmores
7、leepthanthirdgraders.D. One,sraceorgenderhasnothingtodowithhisweight.3. Howdoestheauthordevelopthepassage?A.BylistingfiguresB.BycomparingdifferentopinionsC.ByprovidingexamplesD.Byconductingasurvey4. Whatisthesuitabletitlefbrthepassage?A. ThebenefitsofenoughsleepforchildrenB. Sleepinglessincreasesthe
8、riskofobesityC. Whichcomesfirst,ittlesleeporobesityD. Howmanyhoursofsleepdochildrenneed?BHaveyoueverlostyourcaronaparkinglot?Ithappens.Youparkandgoshopping.Whenyougetback,youhavenoideawhereyourcaris.ltcanbediscouraging.Youdontneedtoinstall（安装）anexpensiveGPSsystemtokeeptrackofyourcar.Thatstooexpensiv
9、e.Youwouldneedtopayamonthlysubscriptionfeejusttouseit.Butisthereawaytotrackyourvehiclewithoutspendingafortune?Yes,nowthereis!ACalifornia-basedstart-upcompanywasabletomakethisareality.Theycreatedatinydevicethatworkswithyoursmartphone,anditcouldbeexactlywhatyou,relookingfbr!ItscalledTrackRBravoJfschan
10、gingthewaywekeeptrackoftheimportantthingsinourlives.InstallthefreeTrackRapponyoursmartphone,connecttheapptoyourdeviceandyourereadytogo!SimplyattachTrackRtowhateveryouwanttokeepaneyeon.Theentireprocessofsettingituponlytakes5minutesorless.Youcanattachittoyourkeys,walletandanythingelseyoudontwanttolose
11、.ThenusetheTrackRapptofindwhereyourmissingitemareinseconds.ForgetexpensiveGPSsystemsortrackingservices.Nobodywantstopayexpensivemonthlysubscriptionfees.Weunderstandhowstressfulthesethingscanbe,andthisisthereasonwhythecompanycreatedTrackR-ThisdeviceisyourVIPwhenyouneedtotakecareofimportantthings.Ifyo
12、uforgetwhereyouparkyourcar,takeoutyoursmartphoneandopentheTrackRapp.Taponthelostitemsignonthescreenandtheappwilltellyoutheexactlocation.Thisdeviceisbynomeansexpensive.TrackRonlycostsS29,asmallpricetopayforpeaceofmind.Thedeviceissmallenoughthatyoucanattachittoyourpets.Putitontheircollar,andyouwillnev
13、erlosetrackofthem!Attachittoyourkeyorwallet,andneverwasteaminutethewholehouseforit.Sinceyouvebeeninformedaboutthisbilliantinvention,nowattachittoeverythingthatsimportanttoyou.5. WhydoestheauthormentionthelostcarinthefirstParagraph?A. Toexplainhowterriblethesituationis.B. Tostresstheimportanceofbeing
14、cautious.C. Toleadtothetopicconcerningfindinglostitems.D. Toprovideonecommonexampleabouttheft.6. WhatsthefeatureoftheTrackRapp?A. Theprocessofsettinguptheappiscomplex.B. Thecostofsettinguptheappisratherhigh.C. Theappisavailableinanyelectronicequipment.D. Theapphelpslocatethelostitemsinashorttime.7.
15、TheTrackRwascreatedbecause.A. lifeisfullofallkindsofpressureB. trackingservicescausefinancialburdenC. peoplewanttokeeptheirimportantitemssafeD. GPSsystemscannotprovidespecificlocation8. WhichofthefollowingisclosesttothemeaningoftheunderlinedwordrummaginginParagraph5?A.SearchingB.DestroyingC.Cleaning
16、D.MovingCOnJune17,1774,theofficialsfromMarylandandVirginiaheldatalkwiththeIndiansoftheSixNations.TheIndianswereinvitedtosendboystoWilliamandMaryCollegeJnaletterthenextdaytheyrefusedtheofferasfollows：Weknowthatyouhaveahighopinionofthekindoflearningtaughtinyourcolleges,andthatthecostsoflivingofouryoungmen,whilewithyou,wouldbeveryexpensivetoyou.Weareconvincedthatyoumeantod
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